/*
 * Copyright (c) 2005 -2008 Reliable Source, Inc. and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Mozilla Public License v.1.1,
 * BSD, and Eclipse Public License v1.0 which accompanies this
 * distribution and is available at:
 *
 * 		http://www.eclipse.org/legal/epl-v10.html
 * 		http://www.opensource.org/licenses/bsd-license.php
 * 		http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * Contributors:
 *     IBM Corporation	     -  http://ibm.com
 *     	- initial API and implementation
 *
 *     patientos.org         - http://patientos.org
 *     	- domain and database persistence layer
 *
 *     Reliable Source, Inc. - http://reliablesource.org
 *     	- Symbiosys Application Framework,
 *     	- Symbiosys Application, Symbiosys Product
 *
 */
package org.reliablesource.symbiosys.ui.tests.viewers;

import org.eclipse.jface.viewers.AbstractTreeViewer;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;

import org.eclipse.swt.SWT;

import org.eclipse.ui.progress.DeferredTreeContentManager;


/**
 *
 * MockObjectLazyContentProvider.java<br>
 * Created on: Jun 26, 2008<br>
 *
 * @author <a href="mailto:dennis.park@gmail.com">Dennis Park</a>
 *
 * @category
 * @since 1.0
 */
public class MockObjectLazyContentProvider extends MockObjectContentProvider
    implements ITreeContentProvider {
    public static final int LAZY_STYLE = SWT.VIRTUAL | SWT.MULTI |
        SWT.H_SCROLL | SWT.V_SCROLL;
    private DeferredTreeContentManager manager;

    @Override
    public Object[] getChildren(final Object parentElement) {
        return manager.getChildren(parentElement);
    }

    @Override
    public boolean hasChildren(final Object element) {
        return manager.mayHaveChildren(element);
    }

    @Override
    public void inputChanged(Viewer _viewer, Object _oldInput, Object _newInput) {
        if (_viewer instanceof AbstractTreeViewer)
            manager = new DeferredTreeContentManager(this,
                    (AbstractTreeViewer) _viewer);
    }
}
